update help toc correctly show program name

truenas_kmip_unlock.py

@@ -312,7 +312,7 @@ def select_pool(pools, wording = "edit"):
 if __name__ == '__main__':
     # Build and parse arguments
     parser = argparse.ArgumentParser(
-        usage="%prog [options]",
+        usage="{} [options]".format(os.path.basename(__file__)),
         description="Run Truenas pool unlock operation.  This will unlock encrypted pools on truenas.")
     parser.add_argument(
         "-c",